Final answer:
In 'The Wife of Bath's Tale', the knight decides to grant the 'fairy bride' the choice over her own appearance and faithfulness, which results in her becoming both beautiful and faithful.
Step-by-step explanation:
In The Wife of Bath's Tale from Geoffrey Chaucer's The Canterbury Tales, the knight, when presented with a choice by the 'fairy bride,' decides to give sovereignty over the decision to his wife. He allows her to choose whether she will be beautiful and unfaithful, or ugly and faithful.
The wife, pleased with his answer that effectively gives her control, rewards him by becoming both beautiful and faithful, thus solving his dilemma and demonstrating the tale's moral of the importance of women's sovereignty within marriage.